National Potato Chip Day 
This is one holiday you may take with a pinch of salt! Potato Chip Day is a celebration of the world’s best-loved snack, first created in the 19th century. Tycoon Cornelius Vanderbilt was staying at Saratoga Springs in New York and kept on sending back his French fries because he said they were cut too thick. Chef George Crum cut his spuds as thin as possible, initially as a joke – and the result was the world’s first potato chips. The snack’s popularity spread in the 1920s, when the first mass-produced packs went on sale.
https://www.daysoftheyear.com/days/potato-chip-day/
Pi Day 
Pi, wonderful pi. It plays into so many aspects of our lives and goes on forever and ever and ever and ever and eve… You get the point. Every year there comes a certain day that shares numerical values with Pi, and on that day there is a celebration of Pi with every kind of Pie you can imagine. You see, pies are round, and Pi is circumference over diameter, a number that, while being functionally infinite, also happens to be a constant in every circle ever. Pi day celebrates the long history of this fantastic number, and the long journey science has taken (and is still on) to seek the end of a number known to be infinite in length.
https://www.daysoftheyear.com/days/pi-day/
International Ask A Question Day 
That’s right, now is your opportunity to ask that burning question that’s been festering in the dark recesses of your mind. We all know there’s no such thing as a stupid question, so go on, think up the wildest, craziest, most bizarre question you would like to see answered and fire away! With the wonders of modern technology these days, surely someone out there will have an answer for you. (Whether or not the answer is true is another story!)
https://www.daysoftheyear.com/days/international-ask-a-question-day/
Science Education Day 
is a chance to celebrate and say thank you to all those who share their passion for science with kids and adults everywhere and in all venues. This is a day to thank classroom and homeschool science teachers, as well as docents, volunteers, and members of the education staff at museums, zoos, aquariums, observatories, planetariums, state or national parks, science centers, nature centers, outdoor education centers, rocket parks, and any other formal or informal science setting. It’s a good day to thank a teacher; post a thank you note or e-card on your social media page; say thanks on the social media page of museums and other institutions; volunteer at a school, museum, etc; or join or make a special donation to a museum or other institution as a thank you.
https://www.daysoftheyear.com/days/science-education-day/
http://www.famousbirthdays.com/march14.html